1.
Department of Geology, Northwest University, Xi'an 710069, China;Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;Xi'an Institute of Geology and Mineral Resources, Xi'an 710054, China
2.
Xi'an Institute of Geology and Mineral Resources, Xi'an 710054, China
3.
Yanchang Petroleum Administration Bureau, Yan'an 717208, Shaanxi, China
4.
Department of Geology, Northwest University, Xi'an 710069, China;Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;Yanchang Petroleum Administration Bureau, Yan'an 717208, Shaanxi, China